| 摘要 |
<p>PURPOSE:To improve the operating efficiency of an information processing system by giving initialization to the system by understanding properly the capacity of a RAM as well as the constitution of a device such as an I/O, etc. CONSTITUTION:When a power supply is applied, an MPU1 processes information according to the program information stored in a ROM3. An access is given to the address of a RAM2 shown by an HREG1. In this case, however, a bus error interruption is produced unless the RAM2 is packed to the corresponding address when an address is given to the RAM2 shown by the HREG1 since the RAM2 is continuously addressed from 0. Then the address value shown by the HREG1 when said interruption is produced is defined as the packing capacity of the RAM2. While the register of an HREG2 understands the structure of a device such as an I/O, etc. Then an information processing system is designed with reference to the capacity value of a memory, the number of devices, etc.</p> |
